Metal-cutting-off device.



G. GORTON.

METAL cUTT1NG-oEE DEVICE.

APPLICATION FILED JULY 18, 1910.

Patented Nov. 5, 1912.

3 SHEETS-SHEET 1.

uoLuMmA PLANOGRAPH C0., WASHINGTON. D, c,

G.G0RT0'.

METAL CUTTING-OFF DEVICE.

APPLICATION FILED JULY 18, 1910,

1,043,093. Patented Nov. 5, 1912.

3 SHEETS-SHEET 2,

Gr.A GURTO'N'.

` METAL CUTTING-OFP DEVICE.

APPLIUATION FILED JULY 18, 1910.

1,043,093.v Patented NOV. 5, 1912.

3 SHEETS-SHEET 3.

GEORGE GORTON, OF RACINE, WISCONSIN.

METAL-CUTTING-OFF DEVICE` Specification of`Letters Patent.`

Patented Nov. 5, 1912.

Application led July 18, 1910. Serial No. 572,607.

To all whom it may copcern:

it known that I, GEORGE GoE'roN, a citizen of the United States,residing at Racine, ltacine county, Wisconsin, have invented certain newand useful Improvements in lvtetal-Cutting-Otl Devices; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to certain improve-` ments in or relating torotary metal cutting ott7 mechanism or the like, and more particnlzn'lyrelates to devices for removing or displacing metal chips from metalcutters; and the objects and nature of the invention will be readilyunderstood bv those skilled in the art in the light of the followingdescription of the accompanying dra-wings illustrating what I nowconsider the preferred embodiments from among other formations, andarrangements within the spirit and scope of my invention. tu object ofthe invention is to provide means for knocking off the chips that adhereto the throats or front edges of the cutters carried b v the rotaryblades of metal cutting-oft machines, particularly machines of the highspeed Gorton or internal saw type, and thereby prevent said chipspassing into the work with the cutters and greatly increasing thepercentage of broken cutters. .i further object of the invention is toprovide a metal cutting off machine with means actuated by therotationof the cutter blade, for successively and angularly hammering orstrikingthe chip receiving por-v tions of the cutters, as the cutterspass from f the work, to dislodge and remove the chips from such cuttersand thereby clean the cutters before they again pass to the work.

A further object of the invention is to provide an efficient, durableand lcomparatively simple chip breaker or remover for the cutters ofcutting off machines, saws or Fig. 2, is a rear elevation of the chipremover, a portion of the cutting on' machine feed carriage and of therotary cutter blad-e being shown. Fig. 3, is ay detail perspective viewshowing portions of the chip remover. and a cutter engaged by the hammeror striker of the remover. Fig. 4t, is a cross section on the line i-4:,Fig. l. Fig. 5, is a detail top plan view of a portion of the supportingbracket of the chip remover. Fig. 6, is a perspective showing a modifiedchip remover, and a portion of a rotary cutter blade and its cutterswhich said remover is arranged to' successively hammer. Fig. 7, is adetail perspective of another form of chip remover.

In the practical operation of rotary metal cutting off machines,particularly those of the Gorton high speed internal savv type, it hasbeen found that the chips of metal removed from the work often adheretothe throats or front edges of the cutters and again pass into the workwith such cutters particularly when soft stock such assoftV .although Ishow` several forms of devices for.

this purpose, yet wish it understood that I do not limit my invention tothe specific constructions illustrated, except as required by thescope'of the appended claims, inasmuch as various formations can bedevised for this purpose all utilizing the generic features of myinvention., Y

In theidrawings, I Vdisclose such portions of a Gorton high speedcutting od machine as necessary to show the application of the presentinvention, and in this connection l, is a portion of the stationary orfixed base of such machine; 2, a portion of the reciprocatory or otherfeed carriage in which is mounted the rotary hollow cutteri' ybladecarryinganddriving drum and its actuating gearing. 3, is" thecutter blade fixed t-o and driven by said drum and having a centralwork. receiving opening 30, rwith cutters 4, tiXed to said'V blade andarilo ranged around and projecting into said opening. Each cutter has aworking point 40, and a front chip receiving portion or throat 4l.

20, is an upwardly projecting vertical bolt arranged at the front faceof the feed carriage and fixed thereto and arranged adjacent to thecutter blade rotating in said carria ge, and in the type of chip removershown by Fig. 1, this bolt is utilized as the support or point ofattachment of the chip remover frame or support.

In the type of my invention illustrated by Fig. 1, an elongated hammeror striker' is employed movable longitudinally to drive its end againsteach cutter and thereby impart an endwise blow thereto at the chipreceiving portion thereof, and this endwise movable hammer is arrangedat an angle or inclination to the plane of the cutter blade to impart.an angularly directed blow against each cutter for the purpose of morereadily dislodging the chip and knocking the same laterally from thecutter. The hammer 5, in this specic example, is formed by an elongatedstraight flat comparatively thin narro-w strip of spring steel arrangedin front of the cutter blade and to one side et the werk opening 30,thereof, with its upper end spaced outwardly a distance from the upperright hand portion of the blade and with its lower striking` or hammerend 50, extending into the circle in which the inner proj ecting ends ofthe eut-ters move. ltl will hence be noted that the hammer is inclineddownwardly and inwardly toward the blade and the longitudinal axis ofthe hammer intersects the plane of the cutter blade at an acute angle..A suitable spring, such as G, constantly exerts its tension on thehammer to force the same down to its limit of downward or inwardmovement toward the cutters. The hammer is so arranged with respect tothe movement of the cutters as to intersect the circle in which thethroats or chip receiving portions of the cutters move, and tosuccessively engage the cutters after they pass from the wor; or stock,for instance, as they move upwardly on their return stroke toward thework. As the cutter bla-de rotates`r the hammer is forced longitudinallyand upwardly, against the tension of its spring as the cutter engaged bysaid hammer moves upwardly, until the striking end of the hammer movesout from the plane et the cut-ter and cutter blade, and the hammer isthen held up and back by the outer side face of the cutter and adja centsurfaces intervening between cutters, which slip past the hammerstriking end. l/Vhen said surfaces have slipped past the hammer end,said hammer is suddenly released and under the impulse of its springmoves inwardly and longitudinally and delivers a sharp blow against thefront side edge of the throat of the nexty succeeding cutter or againsta chip that might be caught in said throat. This blow is delivered at anangle or in a. direction to break or dislodge the chip and drive thesame laterally and rearwardly from the cutter. The striking end of thehammer is usually eut oit square but by reason ot the angular position0f the hammer said striking end presents a beveled or angular edge tothe cutter for the purposes of effectively dislodging the chip andreadily slipping from cutter to cutter as the blade revolves. lt will bereadily understood that the hammer is lifted and suddenly released byeach cutter as the blade revolves, so that the hammer slips and snapsfrom cutter to cutter to deliver its eiiective chip dislodging blow atthe throat of each cut-ter.

Any suitable supporting and guiding means can be provided for the hammerand its actuating spring. For instance, in the type illustrated by Fig.l, l show the hammer and its spring carried by a bracket comprisingrelatively adjustable members, the bracket being removably mounted onthe bolt end. 20, forming a part of the feed earriage. This bracketconsists of a horizontally or laterally disposed supporting plate or arm7, formed with a split hub 70, to receive the bolt end Q0, and adaptedto be rigidly clamped thereon by the bolt 71, and the other member ofthe bracket consists ot' an angle piece having a laterally orhorizontally arranged top plate S, and a depending inwardly inclined armS0, provided with an inwardly and downwardly inclined elongated housingor guide way 8l, in which the hammer 5, is confined to reciprocate. Thelateral plate S, is usually transversely inclined to conform to thefront inclined face of the horizontally or laterally extending plate 7,and is fitted thereto to be adjustable longitudinally thereof to securethe desired adjustment of the striking end of the hammer radially withrespect to the cutters. The members of the bracket are clamped togetherby the bolt 9, passing through a. longitudinal slot in the plate S, andscrewing into the plate or arm 7, as will be well understood by thoseskilled in the art. Adjustment of the striking end of the hammer towardand from the plane of the cutter blade can be attained by moving thesplit hub 70, axially on the bolt 20. The front or angular member of thebracket is provided with an outwardly projecting stud or pin l0,receiving the coiled hammer actuating spring which terminates in thelaterally extending downwardly springing end 6, loosely inserted in anyone of a series et perforations 5l, inthe projecting upper end of thehammer 5.l The opposite end of the coiled spring is secured to a splithub ll, on the pin l0, and provided with a clamping llt screw wherebythe hub can be fixed on the pin at the desired position to secure thede-l sired tension of the spring.

rlhe bracket carrying the hammer and its actuating spring can be readilyapplied to and removed from the cutting off machine and is capable ofvarious adjustments whereby the striking end of the hammer can be set inthe desired relation with respect to the critters.

li/Vhile this form of endwise striking hammer and supporting bracketconstitutes an` exceedingly durable and eiiicient device, yet lt do notwish to limit my invention to any particular form or arrangement ofsupporting bracket nor to this particular type of hammer. F or instance,in Fig. 6 l show a form of hammer consisting of a strong stiff coiledspring 12, mounted on a stationary pin or stud 13, arranged abouthorizontally in front of the cutter blade and spaced therefrom andsecured to a suitable portion of the feed carriage by a bracket 14. Thisspring is formed with the inwardly and downwardly springing free orstriking end 12 extending inwardly and upwardly from the coil andbearing inwardly against the cutters and being successively liftedthereby and released to snap angularly against the throat portions ofthe succeeding cutters to dislodge the chips and knock them laterallytherefrom, approximately according to the action of the hammer of Fig.7. The tension of the spring 12, 12, can be varied by the adjustablecollar 15, to which one end of the spring is secured. The collar beingaxially adjustable about the pin and provided with a set screw forlocking the same on the pin.

If so desired, a type of hammer, such as disclosed by Fig. 7, can beemployed. ln this type, a rock shaft 16, is arranged about horizontallyin front of the cutter blade and at its outer end is carried by androcks in a box or bearing in a bracket 17, fixed to the front face ofthe feed carriage. A hammer 18, is fixed to the inner end of this shaftto rock therewith and extends radially usually upwardly, therefrom. Thishammer for the sake of durability can consist of a flat spring steelplate, as shown by Fig. 7, having the striking portion or projection 18,at theinner corner of the free end thereof. The rock shaft is springactuated to constantly and yieldingly hold the hammer to the cutters,

`by coiled spring 19, at one end fixed to the 'as described inconnection with the forms hereinbefore referred to.

1tis evident that various changes, variations and modifications might beresorted to without departing from the spirit and scope of my inventionas defined by the appended claims, and hence I do not wish to limitmyself to the exact disclosures hereof.

What I claim is g- 1. A rotary cutter blade provided with projectingcutters, in combination with chipbreaking striking means, substantiallyas described.

2. A metal cutting off mechanism comprising av rotary holder providedwith a series of'spaced cutters havingchip receiving portions, and chipremoving means acting' successively on said cutters after they havepassed from the work to remove the chips therefrom and embodying anactuating device whereby a forceful chip dislodging stroke is deliveredagainst chips on said chip receiving portions.

3. A rotary blade provided with metal cutters, inV combination with achip dislodging hammer' cooperating with said cutters.

4. A metal cutting off saw, in combination witha spring actuated chipremoving hammer.

5. A rotary blade provided with projecting metal cutters having chipreceiving throats, in combination with a spring actuated chip dislodginghammer arranged to operatively engage the cutters successively as theypass from the work,- said. hammer arranged. to snap from cutter tocutter in the circle of movement of the throats thereof.

6. A metal. cutting o saw provided with cutters, in combination with achip removing hammer having a striking portion extending into the circleof movement of the cutters and adapted tobe successively lifted andreleased by the cutters, and actuatingk means and a support thereforarranged be-l spect to the plane of movement -of said cutters. Y i

8. A cutting off saw having projecting cutters, incombination with achip removing hammer having a. striking portion angularly arranged withrespect to the plane in which the cutters move and arranged tosuccessively engage vthe chip receiving portions of the cutters as theymove from the work.

9. A rotary cutter blade having a central work receiving opening andprovided with cutters arranged around and projecting into said opening,in combination with a chip remover arranged to coperate with the cutterssuccessively as they pass from the Work to dislodge the chips therefrom.

10. A rotary cutter blade having a central Work receiving opening andprovided with cutters arranged around and projecting into said opening,in combination with means for dislodging chips from said Cutterscomprising a support, aI movable chip dislodging member projecting intothe path ot movement of said cutters, and means normally and yieldinglyholding said member eX- tending into said path in opposition to therotation of the blade, substantially as described.

11. A rotary metal cutting oft saiv, in combination With a springactuated chip remover arranged opposite a side face thereof andcomprising a striking portion yieldingly held into the circle ofmovement of the cutters of said saw and in a direction opposite to themovement thereof and at an angle thereto to be successively lifted bysaid cutters and to snap from cutter to cutter.

12. A rotary saw having cutters, in combination with a chip removercomprising a hammer adapted to strike the chip receiving portions ot thecutters and a coiled actuating spring therefor.

13. A chip remover comprising an end- Wise .movable .hammer having astriking end, and an actuating spring therefor in combination With amovable cut-ter blade having cutters cooperating with said hammer.

14. A chip remo-ver comprising an edge ivise movable plate having astriking edge, and an actuating spring for driving said plate on itsstriking stroke in combination With a rotary blade having cutters tosuccessively engage said striking edge.

15. A chip remover comprising an adustable supporting bracket having aguide Way, a reciprocating chip striking hammer in said guideWay, and anactuating spring carried by said bracket for driving said hammer on itsstriking stroke.

16. A chip remover comprising a support, a coiled spring carried therebyand having a radially projecting actuating end, and a chip-strikinghammer actuated by said end on its striking stroke.

17. Metal cutters and a movable carrier 'for advancing said cuttersthrough the Work,

in combination with a chip remover for said cutters, and means toractuating said remover in operating on` said cutters to remove chipstherefrom, said remover being actuated in the opposite direction by themovement of said carrier in advancing the cutters through the work.

1S. Means for removing chips trom the cutters ot rotary metal sawscomprising supporting 1n vans, means for driving the hammer on its chipdislodging stroke, and a chip dislodging hammer having a blow impartingand hammer retracting end.

19. Means for removing chips from the cutters ot rotary metal sawscomprising a supporting bracket, and a chip dislodging hammer carried bysaid bracket and yieldingly held with its striking and hammerretractingend in chip engaging position.

20. ln combination, a carriage, a rotary saw having cutters, a bracketsecured to said iarriage, and a spring impelled chip dislodging movablemember carried by said bracket and arranged at a side iace of the sawand having a chip engaging portion arranged to be successively retractedand released by said cutters to impart chip dislodging strokes.

21. ln a metal cutting-ott machine, or the like, in combination, arotary blade having a central ivork receiving opening and cutters ar1anged around said opening, a supporting trame liXed with respect tosaid blade, a support secured to said frame, and chip removing meanscarried by said support and arranged beside said blade to act on saidcutters successively for removing chips therefrom.

22. ln combination, a metal cutting-oil machine, a rotary blade carriedthereby and having a central Work receiving opening and cuttersprojecting thereinto, and chip removing means carried by said carriageand arranged beside said blade in operative chip removing relation withrespect to said cutters to act thereon as they pass from the Work.

In testimony whereof l aiiix my signature, in presence oit twoWitnesses.

anoncev GonroN.

lVitnesses C. R. CARPENTER, E. S. Gunn.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

